"“LifeShirt” – a computerized vest that continuously monitors the patient’s movements – shows that patterns of movements differ between patients with the two disorders. The device, manufactured by VivoMetrics©, monitors hyperactive and repetitive movements, and collects data on respiration, heart rate and other physiological measures. "For testing purposes, they also had a camera in the ceiling that recorded movements of people wearing the shirt.
"Patients with bipolar disease exhibited hyperactivity and a wide range of exploration when in a novel environment, according to the researchers. Schizophrenic patients, on the other hand, exhibited much more restricted movements."http://www.sciencedaily.com/releases/2007/05/070518160743.htm